phpMyAdmin in HTTPS
Add a .htaccess file to the root directory of phpMyAdmin and paste the lines below:
Options +FollowSymLinks RewriteEngine On RewriteCond %{HTTPS} off RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
UPDATE(02Feb2014): This can now be done by just editing config.inc.php on the phpMyAdmin root directory and adding the line below:
$cfg['ForceSSL'] = true;